Commercial Kitchen Exhaust Duct Insulation

Insulation on the duct in the kitchen offers no protection.

Commercial kitchen exhaust duct insulation.

They are heavily insulated for zero clearance to combustibles and a two hour fire rated shaft assembly. R 408 30935a 506 2 corrosion protection. Leading manufacturer of chimney venting and air distribution products for commercial and residential hvac industries for over 80 years. A fire in another compartment unrelated to the kitchen could potentially ignite the grease and cause a fire to cascade throughout a building.

Insulation is applied to kitchen ducts as they pass through other compartments. Unifrax fyrewrap elite 1 5 duct insulation wrap is a flexible enclosure for 1 and 2 hour fire rated commercial kitchen grease ducts range hoods and hazardous exhaust ducts including chemical fume ducts. The grease hood duct from the ceiling to where it exits the building should be enclosed in a fire rated enclosure or approved fire barrier type insulation see 3m or be listed double wall grease duct see metalfab except if the roof where the duct exits is right above the room hood. Therefore it is likely that many commercial cooking exhaust systems do not ex perience significant temperature differences even with non insulated ducts.

Unlike particle deposition in turbulent airflow turbulent vapor deposition is a well understood and documented phe nomena. Fyrewrap elite 1 5 duct insulation is tested per astm e2336 and is acceptable as an alternate to a traditional fire rated shaft. Commercial kitchen hood ventilation ducts and exhaust equipment shall be in compliance with nfpa 96 2014 which is the standard of the national fire protection association listed in chapter 15 of the code. We use insulation to mitigate this risk.

Fyrewrap elite 1 5 duct insulation offers the following product features. Case the exhaust duct was not insulated. Installed as a two layer system fyrewrap elite 1 5 complies with the international mechanical code imc and uniform mechanical code umc. Fyrewrap elite 1 5 duct insulation is a two layer flexible enclosure for two hour rated commercial kitchen grease ducts.

Inventors of the positive pressure chimney system selkirk products meet and exceed the requirements of codes and other manufacturer products. All supply and return air ducts and plenums shall be insulated with a minimum of r 5 r 6 insulation when located in unconditioned spaces and a minimum of r 8 insulation when located outside the building.